Thread-board for spinning, twisting, and the like machines.



A. H. MORTON. THREAD BOARD FOR SPINNING, TWISTING, AND'TIIE LIKE MACHINES. APPLICATION FILED JUNE n. 1914.

1,214,21 1. Patented Jan. 30, 1917.

I 14491186688 mentor 2 M4M QWQ mA W ALBERT H. MORTON, or LOWELL, MASSACHUSETTS.

THREAD-BOARD FOR SPINNING, TWISTING, AND THE LIKE MACHINES.

Specification of Letters Patent.

Patented Jan. 30, 1917.

Application filed June 11, 1914. Serial No. 844,455.

To all whom it may concern Be it known that I, ALBERT H. MORTON, a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Thread-Boards for Spinning, Twisting, and the like Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improvement in thread boardsfor spinning, twisting and the like machines.

The object of the invention is to reorganize and improve the construction of thread boards and to this end the invention consists in the thread board hereinafter described and particularly defined in the claims.

In the accompanying drawings illustrating the preferred form of the invention, Figure 1 is a plan showing the thread board and portions of the doffing rail and roller beam upon which it is supported; and Fig. 2 is a sectional elevation on the line 2-2, Fig. 1.

The dofling rail of a spinning frame is ordinarily 25 or 30 feet long, and it supports upon its front edge the thread boards which are pivotally attached to it. When the dofling rail is lifted to permit doffing, all of the thread boards arelifted with it, and in the constructions heretofore in use it has usually happened that when the dotting rail was lowered not all of the thread boards would fall to operative position. Sometimes a few, and other times a large number, of the thread boards would fall over backward, and this required the operative to go along the whole length of the rail and turn each individual thread board forward to operative position. Whether there was one or many required to be turned back again individually, the operatives time was consumed largely in going to the particular board which required attention.

The present invention contemplates a construction wherein the thread boards are constrained to fall into operative position when the dofling rail is lowered, wholly irrespective of whether the boards fell over backward when the rail was lifted or not. This construction entirely overcomes the necessity for giving the thread board any individual attention after the doffing rail is lowered.

Referring to the drawings, the thread board 1 carries at its outer end the thread guide or finger 2 and is supported at its inner end upon the thread board support 3 which is adapted to be bolted to the dofling rail 4, the doifmg rail in turn being secured to the roller beam 5 by the hinge 6. The doffing rail is a rigid, un-webbed, angular construction having no flange at its front edge and thereby constituting a simple, strong and easily cleaned rail. The thread board 1 is secured to the thread board support by means of the hinged pintle 10 which is received in the ears 11 of the thread board. This pintle 10 is received in the bearings 12 of the thread board support 3. The pintle 10 may be secured in place by riveting the ends or otherwise, and it is immaterial whether it be secured to the ears 11 of the thread board or to the bearings 12 of the thread board support 3, or to neither.- The bearings 12 are provided with thread board supporting lugs 13 which are adapted to engage the underside of the thread board 1 so as thereby to support it in operative position. The thread board support 3 is provided with a forwardly extended table or pintle cover 14: which extends to the rear edge 15 of the thread board 1 so that the upper surface of the thread board and the pintle cover practically form a continuous surface. The rear edge 15 of the thread board is so positioned .with relation to the axis of the pintle 10 that when it is turned up to the position indicated in dotted lines in Fig. 2, this edge 15 will engage the upper surface of the pintle cover 14 and thereby prevent the thread board from being turned back to a position from which it will not be carried forward by gravity to its operative position. That is to say, when the doffing rail is in its lowered position, as indicated in Fig. 2, a thread board cannot turn backward far enough sothat its center of gravity is carried to the rear of the axis of the pintle 10, as a conse quence of which the thread board must be returned by gravity to its operative position. It is immaterial, of course, what position the thread board occupies when the doffing rail is raised, for the dofling rail is operated from one place by the operative, and when the doiiing rail is lowered the thread boards,

if they happen to occupy the position indicated in dotted lines, will be in unstable equilibrium and will fall into operative position again. a

The thread board support '3 is slotted at .16 so as to afford provision for longitudinal adjustment of the thread board with relation to the dofiing rail. A screw bolt 17 secures thethread board support in position. a

The nut 20 requires no attention after the screw 17 is screwed into it, because the undersideof the thread board support 3 is provided with two lugs 21 and 22 so located with relation to the nut 20 that they will hold the nut from turning. Thus, when the longitudinal position of the thread board is to be adjusted,'it can be accomplished by simply loosening the screw 16 and rapping the 'thread'board support so as thereby to move it to the desired position, whereupon the "screw 17 will be tightened and it will be held in adjusted position. The thread board support engages, asthe. drawing shows, the underside of the doffing rail and the front edge thereof. The underside of.

the dofling rail positions the thread board support properly with relation to the dot?- ing rail, because such rail is made of uniform thickness and the pintle cover of the thread board support is made to correspond to the thickness of the dofiing rail. The front edge of the dofling rail engages the pintle cover 14 of the thread board support and accurately positions it with rela- 'tion to the front edge of the dofiing rail. It

will-thus "be seen that the vertical and lateral positions of the thread board support, and consequently the thread board, are accurately positioned by the lower surface and the front edge of the doffing rail, while its longitudinal position is adjustable by the means described.

The important feature of this invention resides in the construction by virtue of which the thread board cannot be moved to a turned-back position when thedofiing rail is in lowered position, as a consequence of which the thread board must come to operative position whenever the'dofling rail is lowered.

The invention is not limited to the illustrated embodiment thereof. 1

Having thus described the invention, what is claimed is 1. A spinning frame having, in combination, a roller beam, a. dofiing rail pivotally mounted on the roller beam, and capable of being turned backward into inoperative position thereon beyond its'center of gravity,

a thread board support secured to the adoiiing rail, and a thread board pivotally mounted on the thread boardsupport, said parts having coiiperating parts preventing the turning of the'thread board to a position beyond that from which it will return by gravity to its'operative position, when the dotting rail is in lowered, that is operative, position,

substantially as described.

A spinning frame having, in .combination, a roller beam, a \doffing rail gplvotally mounted on the roller beam, and a thread board pivotally supported uponthe dofiing" rail, said rail and thread board having provision for preventing the thread board from being turned upon its pivot far enough to carry "its center of gravity beyond the axis of the pivot when the rail is in lowered, that is, operative position, substantially as described.

' ALBERT H. MORTON. Witnesses;

Hone-or. VAN Evnnnn, BURTON W. GARY.

m 011111: patent maybe obtained for five cent: .each, by addressing the "Commissioner =0! Intent, walhington, 2D. 0; 

